Several years ago when I got my first girl, I went to a pet store looking for a dog ... Actually I went to quite a few pet stores looking for a Miniature Pinscher and when I couldn't find one I Googled. That's when I discovered breeders, but the only reason ended up purchasing from a breeder was because only they had the type of dog I wanted. At that point in time if the pet store could have "ordered it in" I would have gone with the consumer-oriented, cookie-cutter pet store!
Back then as a first time, uneducated "pet consumer" I was a bit daunted by the prospect of visiting a breeder. Nearly all the breeders I contacted were about 1 hours drive away from where I lived. The breeders I did manage to make appointments with didn't seem all that "professional" as they tended to be [much] older women from a baby-boomer era who had dogs is every room of their creaky old houses ... The dog's "cat lady" equivalent always pops into my head when I remember back.
I even considered a Chuihuahua as my second dog but was a little freaked out when I saw a Chihuahua/German Shepard cross at a breeder's house. A breeder "accident" is was told laughingly, but seeing a GSD head on a stumpy little body at ground level was ... weird like something out of the Twilight Zone.
Breeder location and presentation aside, pet store "pure breed" prices were on par with that a breeder's price. $1,200 for a dog from a breeder a few suburbs away, or $1,100 for a dog from a pet store chain that you see every weekend. I'm pretty sure most people, look at the clean, well presented franchise pet store front that offers a warranty and think ... "Looks good enough".
I'm wondering if there have there been any consolidated advertising/education campaigns in the mainstream media to promote the benefits of a breeder (certs, quality, health, reputation)? I'm pretty sure if I had seen ads on TV back then promoting registered breeders as the "sensible" and reliable alternative to find a new dog I would have thought "breeder 1st" and "pet store/puppy farm 2nd".